Climate change could trigger a global food crisis, a new U.N. report has warned.

Cattle on a dry paddock in the drought-hit area of Quirindi in New South Wales. The U.N.'s Intergovernmental Panel for Climate Change delivered the most comprehensive scientific overview yet of the links between the land we live off and global warming.Glenn Nicholls / AFP - Getty Images file

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Wednesday was intended to be a day for the president to pay his respects to the victims of two deadly mass shootings, thank first responders and serve as consoler-in-chief.

But the day quickly devolved into one in which Trump attacked local leaders, Democratic presidential candidates and even a cable news host with vitriol in between his visits to two cities still reeling from the weekend's violent attacks that left over 30 dead.

The 21-year-old's mother was said to be concerned about him owning an "AK" type gun, given his age and maturity level.

The family's lawyers say the mother was transferred to a public safety officer who said that based on her description, the 21-year-old was an adult legally allowed to own the weapon.

The suspected gunman's family said this week that his actions "were apparently influenced and informed by people we do not know, and from ideas and beliefs that we do not accept or condone, in any way."

The report, authored by more than 100 scientists from around the world, warns extreme weather could trigger food crises in diverse regions at the same time.

"We see that there's a growing interconnectedness in our food systems," said Cynthia Rosenzweig, one of the lead authors of the report. “There’s trade all over the place, and the potential for multi-breadbasket failure is increasing.”

“I am not sure Amazon has quite grappled with how their innovative technologies intersect with issues of privacy, liberty and government police power,” said Andrew Ferguson, a law professor who studies how police use technology.